@inproceedings{bcf97da9ebbe44a6a163b672d91d2600,
title = "Correcting measured CPT tip resistance for multiple thin-layer effects",
abstract = "Multiple interbedded fine-grained layers in a sand deposit have a “smoothing” effect on the measured tip resistance (qc) from the cone penetrometer test (CPT). This can result in an underestimation of the predicted liquefaction resistance of the sand layers. Herein, the efficacies of two multiple-thin-layer correction procedures are evaluated using published calibration chamber test data. The results highlight limitations of the assessed procedures for profiles with layers less than 40 mm thick. A new approach to estimate the “true” qc (i.e., values that would be measured in a stratum absent of multiple thin-layer effects) from measured qc is explored. The proposed numerical optimization algorithm searches for “true” soil profiles with a finite number of layers. We compare two versions of the algorithm that numerically optimize different functions, one of which uses a logarithm to refine fine-scale details, but which requires longer calculation times to yield improved corrected qc profiles.",
author = "Yost, {K. M.} and J. Cooper and Green, {R. A.} and Martin, {E. R.} and A. Yerro",
note = "Publisher Copyright: {\textcopyright} 2022 the Author(s).; 5th International Symposium on Cone Penetration Testing, CPT 2022 ; Conference date: 08-06-2022 Through 10-06-2022",
year = "2022",
doi = "10.1201/9781003308829-115",
language = "English (US)",
isbn = "9781032312590",
series = "Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022",
publisher = "CRC Press/Balkema",
pages = "778--783",
editor = "Guido Gottardi and Laura Tonni",
booktitle = "Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022",
}